﻿// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
// 
// Copyright (c) 2012, Dr. Masroor Ehsan
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//    * Redistributions of source code must retain the above copyright
//      notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above copyright
//      notice, this list of conditions and the following disclaimer in the
//      documentation and/or other materials provided with the distribution.
//    * Neither the name of the <organization> nor the
//      names of its contributors may be used to endorse or promote products
//      derived from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 
// $Id: DbCatalogManager.cs 12 2012-01-27 06:11:46Z masroore@gmail.com $
// 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

using System.ComponentModel.Composition;
using System.ComponentModel.Composition.Hosting;
using System.Reflection;
using DbCatalogCommon;

namespace DbCatalogManager
{
    public class DbCatalogManager
    {
        [Import(typeof (IDbCatalog))] private IDbCatalog _catalog;

        public void LoadExtensions(string dirExtensions)
        {
            try
            {
                var aggCat = new AggregateCatalog();
                aggCat.Catalogs.Add(new DirectoryCatalog(dirExtensions));
                aggCat.Catalogs.Add(new AssemblyCatalog(Assembly.GetExecutingAssembly()));

                using (var container = new CompositionContainer(aggCat))
                {
                    //var ci = new CompositionInfo(aggCat, container);
                    container.ComposeParts(this);
                }
            }
            catch
            {
                // Ignore
            }
        }

        public void LoadCatalog(string fname)
        {
            if (_catalog != null)
                _catalog.LoadCatalog(fname);
        }

        public void SaveCatalog(string fname)
        {
            if (_catalog != null)
                _catalog.SaveCatalog(fname);
        }
    }
}